Stefan Sayer writes:

 > are you sure it is not the URI from the Contact of the ACK rather than 
 > the From uri? I think its correct to update remote uri from ACK Contact 
 > uri.

stefan,

there is no contact header in the ack (see below).  to me this looks
like a severe bug.

-- juha

--------------------------------------------------------------------

No.     Time            Source                Destination           Protocol 
Info
      1 16:47:29.216459 192.98.101.10         127.0.0.1             SIP/SDP  
Request: INVITE sip:[email protected], with session description

Frame 1 (1039 bytes on wire, 1039 bytes captured)
Linux cooked capture
Internet Protocol, Src: 192.98.101.10 (192.98.101.10), Dst: 127.0.0.1 
(127.0.0.1)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 5090 (5090)
Session Initiation Protocol
    Request-Line: INVITE sip:[email protected] SIP/2.0
    Message Header
        Record-Route: <sip:192.98.101.10;lr;ftag=mqbpn>
        Via: SIP/2.0/UDP 192.98.101.10;branch=z9hG4bKaca8.537d1577.0
        Via: SIP/2.0/UDP 192.98.101.10:5074;rport=5074;branch=z9hG4bKxuqqlfsx
        Max-Forwards: 69
        To: <sip:[email protected]>
        From: "Test" <sip:[email protected]>;tag=mqbpn
        Call-ID: mynutthblsnt...@localhost
        CSeq: 164 INVITE
        Contact: <sip:[email protected]:5074;transport=udp>
        Content-Type: application/sdp
        Allow: 
INVITE,ACK,BYE,CANCEL,OPTIONS,PRACK,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE
        Supported: replaces,norefersub,100rel
        User-Agent: Twinkle/1.3.2
        Content-Length: 336
        P-App-Param: Language=en
        P-App-Name: announcement
    Message Body

No.     Time            Source                Destination           Protocol 
Info
      2 16:47:29.240631 127.0.0.1             192.98.101.10         SIP/SDP  
Status: 200 OK, with session description

Frame 2 (760 bytes on wire, 760 bytes captured)
Linux cooked capture
Internet Protocol, Src: 127.0.0.1 (127.0.0.1), Dst: 192.98.101.10 
(192.98.101.10)
User Datagram Protocol, Src Port: 5090 (5090), Dst Port: sip (5060)
Session Initiation Protocol
    Status-Line: SIP/2.0 200 OK
    Message Header
        Record-Route: <sip:192.98.101.10;lr;ftag=mqbpn>
        Via: SIP/2.0/UDP 192.98.101.10;branch=z9hG4bKaca8.537d1577.0
        Via: SIP/2.0/UDP 192.98.101.10:5074;rport=5074;branch=z9hG4bKxuqqlfsx
        To: <sip:[email protected]>;tag=4F6EF1BA-4AD727F100034EE8-B6A62B90
        From: "Test" <sip:[email protected]>;tag=mqbpn
        Call-ID: mynutthblsnt...@localhost
        CSeq: 164 INVITE
        Server: Sip Express Media Server (1.1.0-dev-r1543M (i386/linux))
        Contact: <sip:[email protected]:5090>
        Content-Type: application/sdp
        Content-Length: 203
    Message Body

No.     Time            Source                Destination           Protocol 
Info
      3 16:47:29.582381 192.98.101.10         127.0.0.1             SIP      
Request: ACK sip:[email protected]:5090

Frame 3 (415 bytes on wire, 415 bytes captured)
Linux cooked capture
Internet Protocol, Src: 192.98.101.10 (192.98.101.10), Dst: 127.0.0.1 
(127.0.0.1)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 5090 (5090)
Session Initiation Protocol
    Request-Line: ACK sip:[email protected]:5090 SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 192.98.101.10;branch=0
        Via: SIP/2.0/UDP 192.98.101.10:5074;rport=5074;branch=z9hG4bKpljcpjxb
        Max-Forwards: 69
        To: <sip:[email protected]>;tag=4F6EF1BA-4AD727F100034EE8-B6A62B90
        From: "Test" <sip:[email protected]>;tag=mqbpn
        Call-ID: mynutthblsnt...@localhost
        CSeq: 164 ACK
        User-Agent: Twinkle/1.3.2
        Content-Length: 0

No.     Time            Source                Destination           Protocol 
Info
      4 16:47:32.369514 127.0.0.1             127.0.0.1             SIP      
Request: BYE sip:[email protected]

Frame 4 (438 bytes on wire, 438 bytes captured)
Linux cooked capture
Internet Protocol, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1)
User Datagram Protocol, Src Port: 5090 (5090), Dst Port: onscreen (5080)
Session Initiation Protocol
    Request-Line: BYE sip:[email protected] SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 127.0.0.1:5090;branch=z9hG4bKfFHFgaSY
        Route: <sip:192.98.101.10;lr;ftag=mqbpn>
        From: <sip:[email protected]>;tag=4F6EF1BA-4AD727F100034EE8-B6A62B90
        To: "Test" <sip:[email protected]>;tag=mqbpn
        CSeq: 10 BYE
        Call-ID: mynutthblsnt...@localhost
        User-Agent: Sip Express Media Server (1.1.0-dev-r1543M (i386/linux))
        Max-Forwards: 70
        Content-Length: 0
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